(_γ_) We must look for our _third_ and most spiritual type of artistic presentation among the romantic arts in that of _poetry._ The supreme characteristic of poetry consists in the power with which it brings into vassalage of the mind and its conceptions the sensuous element from which music and painting began to liberate art. For sound, the only remaining external material retained by poetry, is in it no longer the feeling of the sonorous itself, but is a mere sign without independent significance. And it is, moreover, a sign of idea which has become essentially concrete, and not merely[172] of indefinite feeling and its subtle modes and gradations. And this is how sound develops into the Word, as essentially articulate voice, whose intention it is to indicate ideas and thoughts. The purely negative moment to which music advanced now asserts itself as the wholly concrete point, the point which is mind itself, the self-conscious individual, which produces from itself the infinite expansion of its ideas and unites the same with the temporal condition of sound. Yet this sensuous element, which was still in music immediately united to emotion, is in poetry separated from the content of consciousness. Mind, in short, here determines this content for its own sake and apart from all else into the content of idea; to express such idea it no doubt avails itself of sound, but employs it merely as a sign without independent worth or substance. Thus viewed, the sound here may be just as well reproduced by the mere letter, for the audible, like the visible, is here reduced to a mere indication of mind[173]. For this reason, the true medium of poetical representation is the poetical imagination and the intellectual presentation itself; and inasmuch as this element is common to all types of art it follows that poetry is a common thread through them all, and is developed independently in each. Poetry is, in short, the universal art of the mind, which has become essentially free, and which is not fettered in its realization to an externally sensuous material, but which is creatively active in the space, and time belonging to the inner world of ideas and emotion. Yet it is precisely in this its highest phase, that art terminates, by transcending itself; it is just here that it deserts the medium of a harmonious presentation of mind in sensuous shape and passes from the poetry of imaginative idea into the prose of thought.